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ISO9001 10KHz EF25 HF Transformer 280uH For Switching Power Supply

Categories HF Transformer
Brand Name: Dowis
Model Number: EF25, EFSeries
Certification: CE, UL, RoHs, ISO9001, 16949
Place of Origin: CN
MOQ: 1000pcs
Payment Terms: T/T, L/C
Delivery Time: 3-4Weeks
Packaging Details: Carton Box
Model: DW5478A
Name: HF Transformer
Features: High-temperature resistant
Application: Suitable for a wide range of switching power supply/power transformer/ LED driver transformer/current transformer/distribution transformer
Origin: CN
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ISO9001 10KHz EF25 HF Transformer 280uH For Switching Power Supply

10KHz EF25 HF Transformer 280µH


Features:

1. High quality and Competitive price
2. Good after-sale service
3. High-temperature resistant
4. Supply samples free with the short delivery time
5. Suitable for a wide range of switching power supply/power transformer/ LED driver transformer/current transformer/distribution transformer


1. Drawing (Unit: mm)


2. Winding Method


3. Winding System Requires

WindingRetaining wallPIN PositionWIRE&DESCRIPTIONTSWinding MethodSlot PositionInsulation tapeTubeInto the shaft wayDirection
Pin1-5 side slotPin6-9 side slotStartEndStartEndTape SpecificationTSStartEnd
N1//(2)52UEW-F,φ0.10mm×30 bars(Litz)36PIN1-5 side slot tightly wind for 5 layers+equally wind for 1 layerBetween Pin1.2Between Pin4.50.025×7mm2.118L×10mm/Pin1 towards leftfront
N2//342UEW-F,φ0.28mm×1 bars4PIN1-5 side slot tightly wind in the middleBetween Pin2.3Between Pin3,4////
N3//972UEW-F,φ0.10mm×90 bars(Litz)4PIN6-9 side slot tightly wind, The inlet and outlet wires should be wrapped with 8 × 10mm high temperature adhesive tape for 1 layerBetween Pin8.9Between Pin7.8////
N4//862UEW-F,φ0.10mm×90 bars(Litz)4PIN6-9side slot tightly wind, The inlet and outlet wires should be wrapped with 8 × 10mm high temperature adhesive tape for 1 layerBetween Pin7.8Between Pin6,7

0.025×7mm

(wrap)

1.1//

4. Electrical characteristics

ItemTest TerminalTest ConditionStandard RequirementEquipment
Semi-finished productsFinished ProductsQC
Inductance Test2510KHz,0.1V280uH±7%280uH±9%280uH±10%TH1062 or Equal
Leakage Test25

100KHz,0.1V

(short circuit Pin6+7+8+9)

90uH max90uH max90uH max
Capacitance testPin2+3+4+5Pin6+7+8+9100KHz,0.1V9.0pF max9.0pF max9.0pF max
Direct Currency Resistance25DC 25℃160mΩ max160mΩ max160mΩ maxTH2511 or Equal
3488mΩ max88mΩ max88mΩ max
866.8mΩ max6.8mΩ max6.8mΩ max
976.1mΩ max6.1mΩ max6.1mΩ max
TS TestAll winding20KHz,1V36:4:4:4(±0.2Ts)CH3250 or Equal
Short circuit testPin6-7
Voltage TestPin2+5 to Pin3+4AC-50Hz-3mA1500V,2 Sec1500V,2 Sec1500V,5 SecCJ2670 or Equal
Pin9+7 to pin8+6AC-50Hz-3mA500V,2 Sec500V,2 Sec500V,5 Sec
Pri to CoreAC-50Hz-3mA1500V,2 Sec1600V,2 Sec1500V,5 Sec
Pri to SecAC-50Hz-3mA4000V,2 Sec4100V,2 Sec4000V,5 Sec
Sec to CoreAC-50Hz-3mA2000V,2 Sec2100V,2 Sec2000V,5 Sec


Shenzhen Dowis Electronics Co., Ltd. is a professional manufacturer of electronic transformers, inductors, and filters integrating R&D, production, and sales. It is a national high-tech enterprise and has passed the IATF16949:2016 automotive industry quality management system certification, the product has passed the "UL" CQC" and other safety certifications. The products are widely used in communication equipment, new energy vehicles, industrial control equipment, high-power LED drives, and other market areas. The industry has high visibility. In addition to the domestic market, but also exported to many countries in Europe and the United States.


In order to further expand production capacity, it has set up a special test area construction area in Zhaoqing YueGui cooperation in 2018 of 14000 square meters of manufacturing center named ZhaoQing Sheng Xiang electronic technology co., Ltd. Its management technical team has rich experience in cooperating with customers from well-known domestic enterprises and overseas. The design of products can fully follow customer’s needs and services with a good quality control system, and it has been recognized by many famous enterprises as the core supplier. We look forward to cooperating with you.


Quality ISO9001 10KHz EF25 HF Transformer 280uH For Switching Power Supply for sale
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